Have An Dehai and Lee ever confronted each other head-on?

No, An Dehai had been in the palace for many years (1854, An Dehai 10 years old) when Cixi was still an unknown female convent. 186 1 year, Xianfeng died, and his only son Zai Chun acceded to the throne. His mother, Ye Lashi (that is, Cixi), regards Xiao as a hardworking person. However, due to his arrogance, he intervened in state affairs and made many enemies. Finally, he fell to Jinan and was beheaded (Tongzhi 1869).

Li Yu 1857 (Xianfeng) entered the palace at the age of 13. It was not until Tongzhi was three years old (1864) 16 years old that he was transferred to Cixi Changchun Palace. At this time, the eunuch An Dehai was favored by Cixi and turned purple. Although he entered the palace at the same time, his status was far from the same.

So they didn't confront each other, they confronted each other directly. They only dare to follow Li Dou's position.